柔性铰链微夹持机构的研究  

Design and Analysis of Flexure Hinges Micro-Grabber

作　　者：田世杰[1] 李兵[2] 赵惠英[2] 王朝晖[1] 

机构地区：[1]西安交通大学机械工程学院,西安710049 [2]西安交通大学机械制造系统工程国家重点实验室,西安710049

出　　处：《西安交通大学学报》2004年第5期483-486,共4页Journal of Xi'an Jiaotong University

基　　金：西安交通大学博士学位论文基金资助项目

摘　　要：在研究柔性铰链的基础上,介绍了平面柔性铰链微夹持机构的设计与制作,并对此进行了张合实验.利用解析法和实验,分别得出了平面柔性铰链夹持机构的放大倍数和总张合量.通过调整杠杆机构各个臂长之间的关系,就可以改变微夹持机构的放大倍数和输出的大小,夹持部分的张和量是输入位移的96倍.研究结果表明,平面柔性铰链微夹持机构的输入和输出位移具有良好的线性度,放大倍数可以根据需要进行调整.采用压电陶瓷作为动力组件,通过对压电陶瓷施加电压的调节来精确控制其张合量的大小,可用于对微型零件的操作,因此具有精度高、易控制、性能稳定的优点,可集成于微型装配系统中,并具有广阔的应用前景.Design and manufacture of a type of planar flexure hinges micro-grabber were introduced based on the research of flexure hinges associated with an opening-closing experiment. The amplification and mount of displacement were gained via both experimental and analytical methods. It is shown that the amplification and the mount of output can be adjusted easily by changing the lever length and the amplification can reach up to 96 times. The research results indicate that this type of micro-grabber has a perfect linearity and the amplification can be modified according to the demands. The displacement of fingers can be accurately controlled by the voltage imposed on the attached piezoelectric ceramic packages. This kind of micro-grabber gains advantages of high accuracy, flexible control and stable performance. It is expected to be integrated in a micro-assembly system.

关 键 词：微型机械电子系统 柔性铰链 微夹持机构 

分 类 号：TH112.5[机械工程—机械设计及理论]